Jack Courtney has lived in the UK his whole life. But this summer his parents are travelling to the Democratic Republic of the Congo for a gorilla conference, and they've promised to take Jack and his friends with them. When his parents go missing in the rainforest, abducted by mercenaries, nobody seems to have any answers. Jack is pretty sure that it's got something to do with the nearby tantalum mines, but he needs to prove it. Along with Amelia...